JS function constructs: Calls to classes, objects, and functions

Source: Internet
Author: User

There are two ways of doing this:

Method One: Prototype class--new

function people (name) {

THIS.N = name; var n = name; why not?

}

People.prototype.say = function () {

Alert ("Peo-hello" +n);

}

1. Calling and passing parameters

var p = new People ("Iwen");

P.say ();

2. Create subclasses and let them inherit

function Student () {

}

Student.prototype = new People ();

var supersay = Student.prototype.say; //define and use first

Student.prototype.say = function () { //subclass Student has its own method, the parent class also has, how to call the parent class?

Supersay.call (this);

Alert ("Stu-hello");

}

var s = new Student ();

S.say ();

3. Encapsulation of classes and making external references

Format: (function () {...} ()); Method Call method

(function () {

function people (name) {

THIS.N = name; var n = name; why not?

}

People.prototype.say = function () {

Alert ("Peo-hello" +n);

}

Window.  people = people; //Let externally callable

}());

Method Two:

JS function constructs: Calls to classes, objects, and functions

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